यदि $\int \frac{1+x^2}{1+x^4} dx=\frac{1}{\sqrt{2}} \tan ^{-1}\left[\frac{f(x)}{\sqrt{2}}\right]+c$ है,तो $f(x)=$

  • A
    $x+\frac{1}{x^2}$
  • B
    $x-\frac{1}{x^2}$
  • C
    $x+\frac{2}{x}$
  • D
    $x-\frac{1}{x}$

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यदि $I_n = \int \frac{\sin nx}{\cos x} dx$ है,तो $I_n =$

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यदि $\int \frac{dx}{(1+\sqrt{x}) \sqrt{x-x^2}} = \frac{A \sqrt{x}}{\sqrt{1-x}} + \frac{B}{\sqrt{1-x}} + C$, जहाँ $C$ एक वास्तविक स्थिरांक है, तो $A+B$ का मान ज्ञात कीजिए।

फलन का समाकलन कीजिए: $\frac{x-1}{\sqrt{x^{2}-1}}$

यदि $f(x) = \int \left[ \tan^2 x + \cot^2 x + \frac{4(\sin^3 x + \cos^3 x)}{\sin^2 2x} \right] dx$ और $f\left(\frac{\pi}{4}\right) = 0$ है, तो $3 \left[ f\left(\frac{\pi}{6}\right) + 2 \right] = $

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